'03-'08 Yamaha YZ | WR | YZF 450 | 450F - Hot Cams Intake Stage 1

'03-'08 Yamaha YZ | WR | YZF 450 | 450F - Hot Cams Intake Stage 1

Dual-cam motor: intake and exhaust cams sold separately. Excellent midrange and top-end increase. Exhaust cam includes auto-decompression mechanism. Uses stock valve springs.

For Model(s):

2003-2008 Yamaha WR 450F

2004-2008 Yamaha YFZ 450

2003-2008 Yamaha YZ 450F

Intake:

Intake lift (mm): 8.86 Intake lobe center (degrees): 110 Intake duration (degrees at 1mm): 269 Intake valve lash (mm): 0.15 Note: Divide mm values by 25.4 for inches.